Strongly-correlated fermionic matter in the dilute limit
- Los Alamos National Laboratory
We study 'the ground-state properties of the many-body system composed of spin-l/2 fermions interacting via a zero-range, infinite scattering length contact interaction.' Sometimes referred to as the George Bertsch problem, it is of particular interest in astrophysics in connection with the equation of state for neutron matter and has been revisited recently with the advent of experimental studies of the BCS to BEC crossover in ultracold fermionic atom gases. We will show that new insights into the solution to this problem are obtained in the context of a coupled-cluster (exp S) expansion approach to calculating the equation of state for dilute fermionic systems and that present state-of-the-art Monte Carlo calculations have not yet provided the definitive answer.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC52-06NA25396
- OSTI ID:
- 960767
- Report Number(s):
- LA-UR-08-07128; LA-UR-08-7128; TRN: US201008%%687
- Country of Publication:
- United States
- Language:
- English
Similar Records
Auxiliary field formalism for dilute fermionic atom gases with tunable interactions
Properties of strongly paired fermionic condensates